Mayor de Blasio has been MIA amid complaints that a high-rise built by a developer who is one of his campaign contributors is illegally blocking iconic views of the Brooklyn Bridge, say local residents.

Advocates in Brooklyn Heights say that the luxury 10-story hotel and condo being built by Toll Brothers on parkland just south of the bridge has overshot its 100-foot height limit by 35 feet.

That difference blocks age-old views of the landmark bridge from portions of the historic promenade, the residents complain.

Last year, Toll Brothers donated $25,000 to the mayor’s nonprofit, the Campaign for One New York — which isn’t governed by campaign-finance donation limits.

“It really calls into questions whether public officials are able to act on behalf of the public when so much of their political future rests on these private firms,” said Cristina Page, 44, a member of the advocacy group Save The View Now.

Park reps say mechanical equipment had to be put on the roof after Superstorm Sandy, but it’s still within contractual height limits.

De Blasio said he didn’t know enough about the controversy to comment.

City Hall officials say they’ve been diligent about overseeing the entire project – including a smaller building – which is funding the popular park.

“We take our responsibilities here seriously, and whenever problems have arisen regarding safety or the obstruction of protected views, we have intervened aggressively and held the developer accountable,” said spokesman Wiley Norvell.